发布时间:2014/7/17 14:23:02 作者:杨林,崔再铎,任仲伟,贺玉坤 【字体:
大 中 小】
杨林,崔再铎,任仲伟,贺玉坤
(沈阳工业大学 机械工程学院,辽宁 沈阳 110870)
摘要:五轴数控机床是实现工件复杂表面精密加工的重要设备,而机床本身精度是保证加工精度的重要前提。以一台大型五轴数控加工机床为研究对象,分析各项误差,应用多体系统运动学理论,建立移动轴与旋转轴的几何误差数学模型,推导出刀具相对工件坐标系的位置与姿态误差表达式,为误差补偿提供精确数学模型,提高机床加工精度。
关键词:五轴机床;几何误差;误差模型
中图分类号:TG659 文献标志码:A doi:10.3969/j.issn.1006-0316.2014.07.003
文章编号:1006-0316 (2014) 07-0010-04
Modeling method of geometric error in five-axis CNC machine tool
YANG Lin,CUI Zai-duo,REN Zhong-wei,HE Yu-kun
( School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, China )
Abstract:As for complex surfaces, five-axis NC machine tool is an important equipment to achieve the precision machining; the accuracy of the machine tool itself is an important prerequisite to ensure accuracy. A large five-axis CNC machine tool is studied in this paper by analysis of errors, the moving axis and rotary axis geometric error mathematical models is achieved by the application of multi-body kinematics theory. the position and attitude error expression of the tool relative to the work piece coordinate system are deprived, provide a accurate mathematical model for error compensation and improve the accuracy of CNC machine tool.
Key words:machine tool;geometric error;error model
———————————————
收稿日期:2013-11-12
基金项目:辽宁省教育厅科技项目(L2012033)
作者简介:杨林(1960-),男,辽宁沈阳人,硕士,教授,主要研究方向为现代设计理论与方法、机械系统计算机控制技术、齿轮加工技术与专用数控机床。